/*!
 * Sizzle CSS Selector Engine - v1.0
 *  Copyright 2009, The Dojo Foundation
 *  Released under the MIT, BSD, and GPL Licenses.
 *  More information: http://sizzlejs.com/
 */
(function(){

var chunker = /((?:\((?:\([^()]+\)|[^()]+)+\)|\[(?:\[[^[\]]*\]|['"][^'"]*['"]|[^[\]'"]+)+\]|\\.|[^ >+~,(\[\\]+)+|[>+~])(\s*,\s*)?/g,
    done = 0,
    toString = Object.prototype.toString,
    hasDuplicate = false;

var Sizzle = function(selector, context, results, seed) {
    results = results || [];
    var origContext = context = context || document;

    if ( context.nodeType !== 1 && context.nodeType !== 9 ) {
        return [];
    }
    
    if ( !selector || typeof selector !== "string" ) {
        return results;
    }

    var parts = [], m, set, checkSet, check, mode, extra, prune = true, contextXML = isXML(context);
    
    // Reset the position of the chunker regexp (start from head)
    chunker.lastIndex = 0;
    
    while ( (m = chunker.exec(selector)) !== null ) {
        parts.push( m[1] );
        
        if ( m[2] ) {
            extra = RegExp.rightContext;
            break;
        }
    }

    if ( parts.length > 1 && origPOS.exec( selector ) ) {
        if ( parts.length === 2 && Expr.relative[ parts[0] ] ) {
            set = posProcess( parts[0] + parts[1], context );
        } else {
            set = Expr.relative[ parts[0] ] ?
                [ context ] :
                Sizzle( parts.shift(), context );

            while ( parts.length ) {
                selector = parts.shift();

                if ( Expr.relative[ selector ] )
                    selector += parts.shift();

                set = posProcess( selector, set );
            }
        }
    } else {
        // Take a shortcut and set the context if the root selector is an ID
        // (but not if it'll be faster if the inner selector is an ID)
        if ( !seed && parts.length > 1 && context.nodeType === 9 && !contextXML &&
                Expr.match.ID.test(parts[0]) && !Expr.match.ID.test(parts[parts.length - 1]) ) {
            var ret = Sizzle.find( parts.shift(), context, contextXML );
            context = ret.expr ? Sizzle.filter( ret.expr, ret.set )[0] : ret.set[0];
        }

        if ( context ) {
            var ret = seed ?
                { expr: parts.pop(), set: makeArray(seed) } :
                Sizzle.find( parts.pop(), parts.length === 1 && (parts[0] === "~" || parts[0] === "+") && context.parentNode ? context.parentNode : context, contextXML );
            set = ret.expr ? Sizzle.filter( ret.expr, ret.set ) : ret.set;

            if ( parts.length > 0 ) {
                checkSet = makeArray(set);
            } else {
                prune = false;
            }

            while ( parts.length ) {
                var cur = parts.pop(), pop = cur;

                if ( !Expr.relative[ cur ] ) {
                    cur = "";
                } else {
                    pop = parts.pop();
                }

                if ( pop == null ) {
                    pop = context;
                }

                Expr.relative[ cur ]( checkSet, pop, contextXML );
            }
        } else {
            checkSet = parts = [];
        }
    }

    if ( !checkSet ) {
        checkSet = set;
    }

    if ( !checkSet ) {
        throw "Syntax error, unrecognized expression: " + (cur || selector);
    }

    if ( toString.call(checkSet) === "[object Array]" ) {
        if ( !prune ) {
            results.push.apply( results, checkSet );
        } else if ( context && context.nodeType === 1 ) {
            for ( var i = 0; checkSet[i] != null; i++ ) {
                if ( checkSet[i] && (checkSet[i] === true || checkSet[i].nodeType === 1 && contains(context, checkSet[i])) ) {
                    results.push( set[i] );
                }
            }
        } else {
            for ( var i = 0; checkSet[i] != null; i++ ) {
                if ( checkSet[i] && checkSet[i].nodeType === 1 ) {
                    results.push( set[i] );
                }
            }
        }
    } else {
        makeArray( checkSet, results );
    }

    if ( extra ) {
        Sizzle( extra, origContext, results, seed );
        Sizzle.uniqueSort( results );
    }

    return results;
};

Sizzle.uniqueSort = function(results){
    if ( sortOrder ) {
        hasDuplicate = false;
        results.sort(sortOrder);

        if ( hasDuplicate ) {
            for ( var i = 1; i < results.length; i++ ) {
                if ( results[i] === results[i-1] ) {
                    results.splice(i--, 1);
                }
            }
        }
    }
};

Sizzle.matches = function(expr, set){
    return Sizzle(expr, null, null, set);
};

Sizzle.find = function(expr, context, isXML){
    var set, match;

    if ( !expr ) {
        return [];
    }

    for ( var i = 0, l = Expr.order.length; i < l; i++ ) {
        var type = Expr.order[i], match;
        
        if ( (match = Expr.match[ type ].exec( expr )) ) {
            var left = RegExp.leftContext;

            if ( left.substr( left.length - 1 ) !== "\\" ) {
                match[1] = (match[1] || "").replace(/\\/g, "");
                set = Expr.find[ type ]( match, context, isXML );
                if ( set != null ) {
                    expr = expr.replace( Expr.match[ type ], "" );
                    break;
                }
            }
        }
    }

    if ( !set ) {
        set = context.getElementsByTagName("*");
    }

    return {set: set, expr: expr};
};

Sizzle.filter = function(expr, set, inplace, not){
    var old = expr, result = [], curLoop = set, match, anyFound,
        isXMLFilter = set && set[0] && isXML(set[0]);

    while ( expr && set.length ) {
        for ( var type in Expr.filter ) {
            if ( (match = Expr.match[ type ].exec( expr )) != null ) {
                var filter = Expr.filter[ type ], found, item;
                anyFound = false;

                if ( curLoop == result ) {
                    result = [];
                }

                if ( Expr.preFilter[ type ] ) {
                    match = Expr.preFilter[ type ]( match, curLoop, inplace, result, not, isXMLFilter );

                    if ( !match ) {
                        anyFound = found = true;
                    } else if ( match === true ) {
                        continue;
                    }
                }

                if ( match ) {
                    for ( var i = 0; (item = curLoop[i]) != null; i++ ) {
                        if ( item ) {
                            found = filter( item, match, i, curLoop );
                            var pass = not ^ !!found;

                            if ( inplace && found != null ) {
                                if ( pass ) {
                                    anyFound = true;
                                } else {
                                    curLoop[i] = false;
                                }
                            } else if ( pass ) {
                                result.push( item );
                                anyFound = true;
                            }
                        }
                    }
                }

                if ( found !== undefined ) {
                    if ( !inplace ) {
                        curLoop = result;
                    }

                    expr = expr.replace( Expr.match[ type ], "" );

                    if ( !anyFound ) {
                        return [];
                    }

                    break;
                }
            }
        }

        // Improper expression
        if ( expr == old ) {
            if ( anyFound == null ) {
                throw "Syntax error, unrecognized expression: " + expr;
            } else {
                break;
            }
        }

        old = expr;
    }

    return curLoop;
};

var Expr = Sizzle.selectors = {
    order: [ "ID", "NAME", "TAG" ],
    match: {
        ID: /#((?:[\w\u00c0-\uFFFF_-]|\\.)+)/,
        CLASS: /\.((?:[\w\u00c0-\uFFFF_-]|\\.)+)/,
        NAME: /\[name=['"]*((?:[\w\u00c0-\uFFFF_-]|\\.)+)['"]*\]/,
        ATTR: /\[\s*((?:[\w\u00c0-\uFFFF_-]|\\.)+)\s*(?:(\S?=)\s*(['"]*)(.*?)\3|)\s*\]/,
        TAG: /^((?:[\w\u00c0-\uFFFF\*_-]|\\.)+)/,
        CHILD: /:(only|nth|last|first)-child(?:\((even|odd|[\dn+-]*)\))?/,
        POS: /:(nth|eq|gt|lt|first|last|even|odd)(?:\((\d*)\))?(?=[^-]|$)/,
        PSEUDO: /:((?:[\w\u00c0-\uFFFF_-]|\\.)+)(?:\((['"]*)((?:\([^\)]+\)|[^\2\(\)]*)+)\2\))?/
    },
    attrMap: {
        "class": "className",
        "for": "htmlFor"
    },
    attrHandle: {
        href: function(elem){
            return elem.getAttribute("href");
        }
    },
    relative: {
        "+": function(checkSet, part, isXML){
            var isPartStr = typeof part === "string",
                isTag = isPartStr && !(/\W/).test(part),
                isPartStrNotTag = isPartStr && !isTag;

            if ( isTag && !isXML ) {
                part = part.toUpperCase();
            }

            for ( var i = 0, l = checkSet.length, elem; i < l; i++ ) {
                if ( (elem = checkSet[i]) ) {
                    while ( (elem = elem.previousSibling) && elem.nodeType !== 1 ) {}

                    checkSet[i] = isPartStrNotTag || elem && elem.nodeName === part ?
                        elem || false :
                        elem === part;
                }
            }

            if ( isPartStrNotTag ) {
                Sizzle.filter( part, checkSet, true );
            }
        },
        ">": function(checkSet, part, isXML){
            var isPartStr = typeof part === "string";

            if ( isPartStr && !(/\W/).test(part) ) {
                part = isXML ? part : part.toUpperCase();

                for ( var i = 0, l = checkSet.length; i < l; i++ ) {
                    var elem = checkSet[i];
                    if ( elem ) {
                        var parent = elem.parentNode;
                        checkSet[i] = parent.nodeName === part ? parent : false;
                    }
                }
            } else {
                for ( var i = 0, l = checkSet.length; i < l; i++ ) {
                    var elem = checkSet[i];
                    if ( elem ) {
                        checkSet[i] = isPartStr ?
                            elem.parentNode :
                            elem.parentNode === part;
                    }
                }

                if ( isPartStr ) {
                    Sizzle.filter( part, checkSet, true );
                }
            }
        },
        "": function(checkSet, part, isXML){
            var doneName = done++, checkFn = dirCheck;

            if ( !part.match(/\W/) ) {
                var nodeCheck = part = isXML ? part : part.toUpperCase();
                checkFn = dirNodeCheck;
            }

            checkFn("parentNode", part, doneName, checkSet, nodeCheck, isXML);
        },
        "~": function(checkSet, part, isXML){
            var doneName = done++, checkFn = dirCheck;

            if ( typeof part === "string" && !part.match(/\W/) ) {
                var nodeCheck = part = isXML ? part : part.toUpperCase();
                checkFn = dirNodeCheck;
            }

            checkFn("previousSibling", part, doneName, checkSet, nodeCheck, isXML);
        }
    },
    find: {
        ID: function(match, context, isXML){
            if ( typeof context.getElementById !== "undefined" && !isXML ) {
                var m = context.getElementById(match[1]);
                return m ? [m] : [];
            }
        },
        NAME: function(match, context, isXML){
            if ( typeof context.getElementsByName !== "undefined" ) {
                var ret = [], results = context.getElementsByName(match[1]);

                for ( var i = 0, l = results.length; i < l; i++ ) {
                    if ( results[i].getAttribute("name") === match[1] ) {
                        ret.push( results[i] );
                    }
                }

                return ret.length === 0 ? null : ret;
            }
        },
        TAG: function(match, context){
            return context.getElementsByTagName(match[1]);
        }
    },
    preFilter: {
        CLASS: function(match, curLoop, inplace, result, not, isXML){
            match = " " + match[1].replace(/\\/g, "") + " ";

            if ( isXML ) {
                return match;
            }

            for ( var i = 0, elem; (elem = curLoop[i]) != null; i++ ) {
                if ( elem ) {
                    if ( not ^ (elem.className && (" " + elem.className + " ").indexOf(match) >= 0) ) {
                        if ( !inplace )
                            result.push( elem );
                    } else if ( inplace ) {
                        curLoop[i] = false;
                    }
                }
            }

            return false;
        },
        ID: function(match){
            return match[1].replace(/\\/g, "");
        },
        TAG: function(match, curLoop){
            for ( var i = 0; curLoop[i] === false; i++ ){}
            return curLoop[i] && isXML(curLoop[i]) ? match[1] : match[1].toUpperCase();
        },
        CHILD: function(match){
            if ( match[1] == "nth" ) {
                // parse equations like 'even', 'odd', '5', '2n', '3n+2', '4n-1', '-n+6'
                var test = /(-?)(\d*)n((?:\+|-)?\d*)/.exec(
                    match[2] == "even" && "2n" || match[2] == "odd" && "2n+1" ||
                    !(/\D/).test( match[2] ) && "0n+" + match[2] || match[2]);

                // calculate the numbers (first)n+(last) including if they are negative
                match[2] = (test[1] + (test[2] || 1)) - 0;
                match[3] = test[3] - 0;
            }

            // TODO: Move to normal caching system
            match[0] = done++;

            return match;
        },
        ATTR: function(match, curLoop, inplace, result, not, isXML){
            var name = match[1].replace(/\\/g, "");
            
            if ( !isXML && Expr.attrMap[name] ) {
                match[1] = Expr.attrMap[name];
            }

            if ( match[2] === "~=" ) {
                match[4] = " " + match[4] + " ";
            }

            return match;
        },
        PSEUDO: function(match, curLoop, inplace, result, not){
            if ( match[1] === "not" ) {
                // If we're dealing with a complex expression, or a simple one
                if ( match[3].match(chunker).length > 1 || (/^\w/).test(match[3]) ) {
                    match[3] = Sizzle(match[3], null, null, curLoop);
                } else {
                    var ret = Sizzle.filter(match[3], curLoop, inplace, true ^ not);
                    if ( !inplace ) {
                        result.push.apply( result, ret );
                    }
                    return false;
                }
            } else if ( Expr.match.POS.test( match[0] ) || Expr.match.CHILD.test( match[0] ) ) {
                return true;
            }
            
            return match;
        },
        POS: function(match){
            match.unshift( true );
            return match;
        }
    },
    filters: {
        enabled: function(elem){
            return elem.disabled === false && elem.type !== "hidden";
        },
        disabled: function(elem){
            return elem.disabled === true;
        },
        checked: function(elem){
            return elem.checked === true;
        },
        selected: function(elem){
            // Accessing this property makes selected-by-default
            // options in Safari work properly
            elem.parentNode.selectedIndex;
            return elem.selected === true;
        },
        parent: function(elem){
            return !!elem.firstChild;
        },
        empty: function(elem){
            return !elem.firstChild;
        },
        has: function(elem, i, match){
            return !!Sizzle( match[3], elem ).length;
        },
        header: function(elem){
            return (/h\d/i).test( elem.nodeName );
        },
        text: function(elem){
            return "text" === elem.type;
        },
        radio: function(elem){
            return "radio" === elem.type;
        },
        checkbox: function(elem){
            return "checkbox" === elem.type;
        },
        file: function(elem){
            return "file" === elem.type;
        },
        password: function(elem){
            return "password" === elem.type;
        },
        submit: function(elem){
            return "submit" === elem.type;
        },
        image: function(elem){
            return "image" === elem.type;
        },
        reset: function(elem){
            return "reset" === elem.type;
        },
        button: function(elem){
            return "button" === elem.type || elem.nodeName.toUpperCase() === "BUTTON";
        },
        input: function(elem){
            return (/input|select|textarea|button/i).test(elem.nodeName);
        }
    },
    setFilters: {
        first: function(elem, i){
            return i === 0;
        },
        last: function(elem, i, match, array){
            return i === array.length - 1;
        },
        even: function(elem, i){
            return i % 2 === 0;
        },
        odd: function(elem, i){
            return i % 2 === 1;
        },
        lt: function(elem, i, match){
            return i < match[3] - 0;
        },
        gt: function(elem, i, match){
            return i > match[3] - 0;
        },
        nth: function(elem, i, match){
            return match[3] - 0 == i;
        },
        eq: function(elem, i, match){
            return match[3] - 0 == i;
        }
    },
    filter: {
        PSEUDO: function(elem, match, i, array){
            var name = match[1], filter = Expr.filters[ name ];

            if ( filter ) {
                return filter( elem, i, match, array );
            } else if ( name === "contains" ) {
                return (elem.textContent || elem.innerText || "").indexOf(match[3]) >= 0;
            } else if ( name === "not" ) {
                var not = match[3];

                for ( var i = 0, l = not.length; i < l; i++ ) {
                    if ( not[i] === elem ) {
                        return false;
                    }
                }

                return true;
            }
        },
        CHILD: function(elem, match){
            var type = match[1], node = elem;
            switch (type) {
                case 'only':
                case 'first':
                    while (node = node.previousSibling)  {
                        if ( node.nodeType === 1 ) return false;
                    }
                    if ( type == 'first') return true;
                    node = elem;
                case 'last':
                    while (node = node.nextSibling)  {
                        if ( node.nodeType === 1 ) return false;
                    }
                    return true;
                case 'nth':
                    var first = match[2], last = match[3];

                    if ( first == 1 && last == 0 ) {
                        return true;
                    }
                    
                    var doneName = match[0],
                        parent = elem.parentNode;
    
                    if ( parent && (parent.sizcache !== doneName || !elem.nodeIndex) ) {
                        var count = 0;
                        for ( node = parent.firstChild; node; node = node.nextSibling ) {
                            if ( node.nodeType === 1 ) {
                                node.nodeIndex = ++count;
                            }
                        } 
                        parent.sizcache = doneName;
                    }
                    
                    var diff = elem.nodeIndex - last;
                    if ( first == 0 ) {
                        return diff == 0;
                    } else {
                        return ( diff % first == 0 && diff / first >= 0 );
                    }
            }
        },
        ID: function(elem, match){
            return elem.nodeType === 1 && elem.getAttribute("id") === match;
        },
        TAG: function(elem, match){
            return (match === "*" && elem.nodeType === 1) || elem.nodeName === match;
        },
        CLASS: function(elem, match){
            return (" " + (elem.className || elem.getAttribute("class")) + " ")
                .indexOf( match ) > -1;
        },
        ATTR: function(elem, match){
            var name = match[1],
                result = Expr.attrHandle[ name ] ?
                    Expr.attrHandle[ name ]( elem ) :
                    elem[ name ] != null ?
                        elem[ name ] :
                        elem.getAttribute( name ),
                value = result + "",
                type = match[2],
                check = match[4];

            return result == null ?
                type === "!=" :
                type === "=" ?
                value === check :
                type === "*=" ?
                value.indexOf(check) >= 0 :
                type === "~=" ?
                (" " + value + " ").indexOf(check) >= 0 :
                !check ?
                value && result !== false :
                type === "!=" ?
                value != check :
                type === "^=" ?
                value.indexOf(check) === 0 :
                type === "$=" ?
                value.substr(value.length - check.length) === check :
                type === "|=" ?
                value === check || value.substr(0, check.length + 1) === check + "-" :
                false;
        },
        POS: function(elem, match, i, array){
            var name = match[2], filter = Expr.setFilters[ name ];

            if ( filter ) {
                return filter( elem, i, match, array );
            }
        }
    }
};

var origPOS = Expr.match.POS;

for ( var type in Expr.match ) {
    Expr.match[ type ] = new RegExp( Expr.match[ type ].source + (/(?![^\[]*\])(?![^\(]*\))/).source );
}

var makeArray = function(array, results) {
    array = Array.prototype.slice.call( array );

    if ( results ) {
        results.push.apply( results, array );
        return results;
    }
    
    return array;
};

// Perform a simple check to determine if the browser is capable of
// converting a NodeList to an array using builtin methods.
try {
    Array.prototype.slice.call( document.documentElement.childNodes );

// Provide a fallback method if it does not work
} catch(e){
    makeArray = function(array, results) {
        var ret = results || [];

        if ( toString.call(array) === "[object Array]" ) {
            Array.prototype.push.apply( ret, array );
        } else {
            if ( typeof array.length === "number" ) {
                for ( var i = 0, l = array.length; i < l; i++ ) {
                    ret.push( array[i] );
                }
            } else {
                for ( var i = 0; array[i]; i++ ) {
                    ret.push( array[i] );
                }
            }
        }

        return ret;
    };
}

var sortOrder;

if ( document.documentElement.compareDocumentPosition ) {
    sortOrder = function( a, b ) {
        var ret = a.compareDocumentPosition(b) & 4 ? -1 : a === b ? 0 : 1;
        if ( ret === 0 ) {
            hasDuplicate = true;
        }
        return ret;
    };
} else if ( "sourceIndex" in document.documentElement ) {
    sortOrder = function( a, b ) {
        var ret = a.sourceIndex - b.sourceIndex;
        if ( ret === 0 ) {
            hasDuplicate = true;
        }
        return ret;
    };
} else if ( document.createRange ) {
    sortOrder = function( a, b ) {
        var aRange = a.ownerDocument.createRange(), bRange = b.ownerDocument.createRange();
        aRange.selectNode(a);
        aRange.collapse(true);
        bRange.selectNode(b);
        bRange.collapse(true);
        var ret = aRange.compareBoundaryPoints(Range.START_TO_END, bRange);
        if ( ret === 0 ) {
            hasDuplicate = true;
        }
        return ret;
    };
}

// Check to see if the browser returns elements by name when
// querying by getElementById (and provide a workaround)
(function(){
    // We're going to inject a fake input element with a specified name
    var form = document.createElement("div"),
        id = "script" + (new Date).getTime();
    form.innerHTML = "<a name='" + id + "'/>";

    // Inject it into the root element, check its status, and remove it quickly
    var root = document.documentElement;
    root.insertBefore( form, root.firstChild );

    // The workaround has to do additional checks after a getElementById
    // Which slows things down for other browsers (hence the branching)
    if ( !!document.getElementById( id ) ) {
        Expr.find.ID = function(match, context, isXML){
            if ( typeof context.getElementById !== "undefined" && !isXML ) {
                var m = context.getElementById(match[1]);
                return m ? m.id === match[1] || typeof m.getAttributeNode !== "undefined" && m.getAttributeNode("id").nodeValue === match[1] ? [m] : undefined : [];
            }
        };

        Expr.filter.ID = function(elem, match){
            var node = typeof elem.getAttributeNode !== "undefined" && elem.getAttributeNode("id");
            return elem.nodeType === 1 && node && node.nodeValue === match;
        };
    }

    root.removeChild( form );
})();

(function(){
    // Check to see if the browser returns only elements
    // when doing getElementsByTagName("*")

    // Create a fake element
    var div = document.createElement("div");
    div.appendChild( document.createComment("") );

    // Make sure no comments are found
    if ( div.getElementsByTagName("*").length > 0 ) {
        Expr.find.TAG = function(match, context){
            var results = context.getElementsByTagName(match[1]);

            // Filter out possible comments
            if ( match[1] === "*" ) {
                var tmp = [];

                for ( var i = 0; results[i]; i++ ) {
                    if ( results[i].nodeType === 1 ) {
                        tmp.push( results[i] );
                    }
                }

                results = tmp;
            }

            return results;
        };
    }

    // Check to see if an attribute returns normalized href attributes
    div.innerHTML = "<a href='#'></a>";
    if ( div.firstChild && typeof div.firstChild.getAttribute !== "undefined" &&
            div.firstChild.getAttribute("href") !== "#" ) {
        Expr.attrHandle.href = function(elem){
            return elem.getAttribute("href", 2);
        };
    }
})();

if ( document.querySelectorAll ) (function(){
    var oldSizzle = Sizzle, div = document.createElement("div");
    div.innerHTML = "<p class='TEST'></p>";

    // Safari can't handle uppercase or unicode characters when
    // in quirks mode.
    if ( div.querySelectorAll && div.querySelectorAll(".TEST").length === 0 ) {
        return;
    }
    
    Sizzle = function(query, context, extra, seed){
        context = context || document;

        // Only use querySelectorAll on non-XML documents
        // (ID selectors don't work in non-HTML documents)
        if ( !seed && context.nodeType === 9 && !isXML(context) ) {
            try {
                return makeArray( context.querySelectorAll(query), extra );
            } catch(e){}
        }
        
        return oldSizzle(query, context, extra, seed);
    };

    for ( var prop in oldSizzle ) {
        Sizzle[ prop ] = oldSizzle[ prop ];
    }
})();

if ( document.getElementsByClassName && document.documentElement.getElementsByClassName ) (function(){
    var div = document.createElement("div");
    div.innerHTML = "<div class='test e'></div><div class='test'></div>";

    // Opera can't find a second classname (in 9.6)
    if ( div.getElementsByClassName("e").length === 0 )
        return;

    // Safari caches class attributes, doesn't catch changes (in 3.2)
    div.lastChild.className = "e";

    if ( div.getElementsByClassName("e").length === 1 )
        return;

    Expr.order.splice(1, 0, "CLASS");
    Expr.find.CLASS = function(match, context, isXML) {
        if ( typeof context.getElementsByClassName !== "undefined" && !isXML ) {
            return context.getElementsByClassName(match[1]);
        }
    };
})();

function dirNodeCheck( dir, cur, doneName, checkSet, nodeCheck, isXML ) {
    var sibDir = dir == "previousSibling" && !isXML;
    for ( var i = 0, l = checkSet.length; i < l; i++ ) {
        var elem = checkSet[i];
        if ( elem ) {
            if ( sibDir && elem.nodeType === 1 ){
                elem.sizcache = doneName;
                elem.sizset = i;
            }
            elem = elem[dir];
            var match = false;

            while ( elem ) {
                if ( elem.sizcache === doneName ) {
                    match = checkSet[elem.sizset];
                    break;
                }

                if ( elem.nodeType === 1 && !isXML ){
                    elem.sizcache = doneName;
                    elem.sizset = i;
                }

                if ( elem.nodeName === cur ) {
                    match = elem;
                    break;
                }

                elem = elem[dir];
            }

            checkSet[i] = match;
        }
    }
}

function dirCheck( dir, cur, doneName, checkSet, nodeCheck, isXML ) {
    var sibDir = dir == "previousSibling" && !isXML;
    for ( var i = 0, l = checkSet.length; i < l; i++ ) {
        var elem = checkSet[i];
        if ( elem ) {
            if ( sibDir && elem.nodeType === 1 ) {
                elem.sizcache = doneName;
                elem.sizset = i;
            }
            elem = elem[dir];
            var match = false;

            while ( elem ) {
                if ( elem.sizcache === doneName ) {
                    match = checkSet[elem.sizset];
                    break;
                }

                if ( elem.nodeType === 1 ) {
                    if ( !isXML ) {
                        elem.sizcache = doneName;
                        elem.sizset = i;
                    }
                    if ( typeof cur !== "string" ) {
                        if ( elem === cur ) {
                            match = true;
                            break;
                        }

                    } else if ( Sizzle.filter( cur, [elem] ).length > 0 ) {
                        match = elem;
                        break;
                    }
                }

                elem = elem[dir];
            }

            checkSet[i] = match;
        }
    }
}

var contains = document.compareDocumentPosition ?  function(a, b){
    return a.compareDocumentPosition(b) & 16;
} : function(a, b){
    return a !== b && (a.contains ? a.contains(b) : true);
};

var isXML = function(elem){
    return elem.nodeType === 9 && elem.documentElement.nodeName !== "HTML" ||
        !!elem.ownerDocument && elem.ownerDocument.documentElement.nodeName !== "HTML";
};

var posProcess = function(selector, context){
    var tmpSet = [], later = "", match,
        root = context.nodeType ? [context] : context;

    // Position selectors must be done after the filter
    // And so must :not(positional) so we move all PSEUDOs to the end
    while ( (match = Expr.match.PSEUDO.exec( selector )) ) {
        later += match[0];
        selector = selector.replace( Expr.match.PSEUDO, "" );
    }

    selector = Expr.relative[selector] ? selector + "*" : selector;

    for ( var i = 0, l = root.length; i < l; i++ ) {
        Sizzle( selector, root[i], tmpSet );
    }

    return Sizzle.filter( later, tmpSet );
};

// EXPOSE

Playdar.Util.select = Sizzle;

})();